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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Managing trunks
340Adding a CO, FX, or WATS trunk group
12
■ Outgoing Display — Typing y in this field allows display phones to show
the name and group number of the trunk group used for an outgoing call.
This information may be useful to you when you’re trying to diagnose
trunking problems.
■ Queue Length — Don’t create a queue for two-way loop-start trunks, or
you may have a problem with glare (the interference that happens when a
two-way trunk is seized simultaneously at both ends).
■ Trunk Type — Use ground-start signaling for two-way trunks whenever
possible: ground-start signaling avoids glare and provides answer
supervision from the far end. Try to use loop-start signaling only for
one-way trunks.
Related topics
Refer to the DEFINITY ECS System Description for information on the types of
circuit packs available and their capacities.
Refer to your switch’s installation manual for installation instructions for circuit
packs.
Refer to ‘‘
Routing outgoing calls’’ on page 173 for detailed information on
Automatic Route Selection.
Adding a CO, FX, or WATS trunk
group
Basic administration for Central Office (CO), Foreign Exchange (FX), and Wide
Area Telecommunication Service (WATS) trunk groups is identical, so we’ve
combined instructions for all 3 in the following procedure. In most cases, Lucent
recommends leaving the default settings in fields that aren’t specifically
mentioned in the following instructions. Your Lucent representative or network
service provider can give you more information. Your settings in the following
fields must match your provider’s settings:
■ Direction
■ Comm Type
■ Trunk Type
!
CAUTION:
Use the list above as a starting point and talk to your service provider.
Depending on your particular application, you may need to coordinate
additional administration with your service provider.